Include en.yml dictionary in gem

Fixes iancanderson#24

Also, remove .rvmrc from project so it's not included in gem via `git
ls-files`

Author: Ian C. Anderson

.rvmrc

@@ -14,11 +14,13 @@ Gem::Specification.new do |s|
   MSG
   s.homepage = "http://github.com/iancanderson/ingreedy"
 
+  s.files = `git ls-files`.split("\n")
+  s.require_path = "lib"
+
   s.add_dependency "parslet", "~> 1.7.0", ">= 1.7.0"
 
   s.add_development_dependency "rake", "~> 0.9", ">= 0.9"
   s.add_development_dependency "rspec", "~> 3.3.0", ">= 3.3.0"
   s.add_development_dependency "coveralls", "~> 0.7.0", ">= 0.7.0"
   s.add_development_dependency "pry"
-  s.files = Dir.glob("lib/**/*.rb")
 end